This is a wired connection issue. My ISP is Northland Cable of New Caney, TX My broadband connection type is cable. My Modem/Router Combo is ARRIS TG862. My firewall is Windows Firewall, antivirus is iolo System Mechanic Pro Version 12. My Homegroup comprises three computers, named CPU4, CPU7, and CPU8. All are running Windows 7 Home Premium SP1. CPU4 is 32-bit, the others are 64-bit. All computers access internet with no problem, and have the latest Windows updates installed. The problem is that, while CPU4 and CPU8 can both see the other computers, CPU7 can only see CPU4 in the Homegroup folder. Each computer can see itself and the other two in the Network folder. CPU4 and CPU8 can freely access shared files on the other two computers. CPU7 can freely access shared files on CPU4. When CPU7 tries to access CPU8, it is prompted for a Network Password. As far as I know, there is no Network Password, or if there is, I do not know what it is or where to discover it. I uninstalled antivirus software from CPU7 & CPU8, but that made no difference. Please advise me what else I should look at.